In this work we present an IC architecture of RF energy harvesting for wireless sensors networks. By analyzing a probabilistic approach used for modeling the possible amount of Global System for Mobile Communication (GSM) energy that could be harvested, an IC system with a 0.18μm CMOS SMIC technology has been designed and optimized at 90 and 900 MHz. so to take advantage of the GSM and FM r...
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The need for fast, reliable and sustainable means of communication is on the rise. Beacons are all set to revolutionize the industry with its immense potential and the ability to be deployed almost anywhere to offer an enhanced user experience. In this paper, we design and validate a context aware content delivery system using a Raspberry Pi which plays the role of a beacon. A local database has b...
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This work presents the design and implementation of a low-complexity beam steering polar transceiver based on a revised DDS-PLL phase shifter architecture. The proposed modulator-less topology targets narrowband communications for enhanced Internet-of-Things systems, and has been prototyped using an FPGA evaluation board and a custom PCB with four PLLs centered at 2.453-GHz. Measured system perfor...
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The current energy consumption behaviour of mankind is causing results that are more catastrophic than just draining the resources of Earth. These results can be seen in the global warming and environmental damage in many places. All these problems serve as an indication for the need of a better conservative and sustainable behaviour. Based on the observed value of both feedback and serious games ...
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This paper presents a visual comfort considered light control method for energy savings in open-plan office and investigates its performance. Simulation and pilot testing results show that more than 60% energy savings could be achieved while providing recommended visual comfort level for each user. Since the proposed algorithm saves energy significantly compared to the previous light control polic...
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This article presents a kit to collect data of electric loads using a device that measures single-phase data and and second device that measures the input of three-phase main power supply of a house. To collect the data, we used current sensors based on an open magnetic core to measure the electromagnetic field induced by the current in the electric conducting wire in a non intrusive way. In parti...
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The paper reviews some application of well-established domain discretization methods (finite difference method-FDM), finite element method-FEM in modeling of magnetohydrodynamics (MHD) phenomena for fusion related research and quantum structures for application in nanodevices. Thus, Grand-Shafranov Equation (GSE) for plasma equilibrium has been solved for some simple excitation forms and the obtai...
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The objective of the study is to develop an efficient travel management model to generate a smart transportation corridor system to mitigate congestion which will prevent, or minimize traffic delays on urban freeways. Based on a first order partial differentiation (PDE) method via a “continuum” approach this study develops a mathematical model which will capture the behavior traffic ...
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The average age growing of the urban population, with an increasing number of 65+ citizens, is calling for the cities to provide global services specifically geared to elderly people. In this context, collecting data from the elderly's environment and his/her habits and making them available in a structured way to third parties for analysis, is the first step towards the realization of innovative ...
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Green construction is becoming priority in developing a new scope to the construction itself. It emerges from the inevitable need to raise the environmental concern and to make effort to build sustainable, by balancing between the conservation of the environment and maintaining prosperity in development. Green design does not only make a positive impact on public health and the environment, it als...
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Current manually-operated SOS systems used in Rallying are ineffective when driver and co-driver cannot push the SOS button due to loss of consciousness after the impact. The SafeRally service proposes a low-cost pilot monitoring system, to associate with existing tracking systems, able to automatically notify a serious accident, when both the driver and the co-driver cannot request help by themse...
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Parkinson's disease is a common neurodegenerative disorder causing several motor symptoms. Gait disorders such as festination and freezing of gait are important clinical problems, since, despite their high impact on patients' quality of life, they are poorly understood and counteracted phenomena due to their episodic nature, heterogeneous manifestation, and drug resistance. Automatic and objective...
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The convergence of mobile communication networks based on technologies mainly like UMTS, LTE, WLAN and WiMAX referred to as Next Generation Networks (NGN) results in a heterogeneous environment. NGN enlarges the number of the network points of attachment (PoA) with overlapping coverage, which increases the actuality of the network selection problem. At the same time, the variety of mobile multimed...
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Many Internet of Things (IoT) technologies interconnect physical sensors, actuators, and heterogeneous computing devices within the existing Internet infrastructure, which make our life more convenient. ArduTalk is a graphical programming environment based on IoTtalk, which aims to develop internetworking Arduino applications for multiple Arduino boards. Therefore, sensors and actuators can be plu...
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The overdimension of transformers in rural areas occurs very frequently because the methodology for their designing is highly overestimated. This is why a comparative study of chargeability calculations of transformers is performed, using consumption data of connected clients, field type data, and measurement by a FLUKE device. Statistics will allow an appreciation of the difference of values that...
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In automatic and image processing based wildfire smoke detection various spatial and temporal procedures are used to detect certain wildfire features. The final step is usually the classification procedure that finally decides if some detected phenomena represents wildfire smoke or not. In classification procedure various classifiers can be used, but as the system has to work in real time and usua...
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The paper deals with the comparison of three different models for the assessment of the electric field radiated by a base station antenna system: The antenna insulated in Free Space (FS), The antenna above Perfect Ground (PG) and the antenna above a lossy half space. The half-space is taken into account via Modified Image Theory Method (MIT). The results obtained by three models are compared to th...
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This paper compares the numerical results for the induced electric field and the specific absorption rate (SAR) obtained using the hybrid FEM/BEM method in two detailed models of the human eye. The first model features the human eye placed in the free space, while the second one incorporates the eye model in the realistic head model obtained from the magnetic resonance imaging (MRI) scans. Althoug...
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In this paper, the effect of wind airflow over a monocrystalline photovoltaic panel (PV) was examined in relation to general velocity and temperature contours. The analysis was obtained using the developed numerical CFD model that was validated by available experimental results. The airflow velocity ranged from 0.5 m/s up to 4.0 m/s and the gained results are specified for different longitudinal c...
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In this paper, a new numerical algorithm for high-accurate computation of exact Carson formulas is developed. Carson formulas are used for computing of per-unit-length (pul) self and mutual impedances of infinitely long parallel conductors. The proposed algorithm is based on piecewise linear approximation of kernel function and analytical integrations of piecewise-linearized kernel function multip...
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